Force distributing apparatus having a threaded opening for a bicycle wheel spoke
A force-distributing apparatus for a bicycle wheel spoke includes a force-distributing body having a free-end first surface and a second surface disposed at an opposite side of the first surface, wherein the first surface may have the shape of a truncated sphere. The force-distributing body has a threaded spoke-receiving opening that extends through the first surface.
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This application is a division of U.S. patent application Ser. No. 13/654,719 filed Oct. 18, 2012 and titled “Force Distributing Apparatus for a Bicycle Wheel Spoke,” which is a continuation-in-part of U.S. patent application Ser. No. 13/369,489 filed Feb. 9, 2012 and titled “Force Distributing Apparatus for a Bicycle Wheel Spoke.”
BACKGROUND OF THE INVENTIONThe present invention is directed to bicycle wheels and, more particularly, to a force-distributing apparatus for a bicycle wheel spoke.
A typical bicycle wheel comprises a hub that is rotatably mounted around a hub shaft, an annular rim structured to support a tire, and a plurality of spokes that connect the hub to the rim. The hub typically includes a pair of spaced-apart hub flanges, wherein each hub flange includes a plurality of circumferentially-disposed openings. The wheel rim also includes a plurality of circumferentially-disposed openings. Each spoke typically has an enlarged head at one end and a threaded shaft at the other end. The spoke extends through a corresponding opening in one of the hub flanges and through a corresponding opening in the wheel rim until the head abuts against the hub flange. The spoke is fastened to the wheel rim by a threaded nut that is screwed onto the threaded shaft and abuts against the wheel rim.
SUMMARY OF THE INVENTIONThe present invention is directed to various features of a force-distributing apparatus for a bicycle wheel spoke. In one embodiment, a force-distributing apparatus for a bicycle wheel spoke comprises a force-distributing body having a free-end first surface and a second surface disposed at an opposite side of the first surface, wherein the first surface has the shape of a truncated sphere. The force-distributing body has a threaded spoke-receiving opening that extends through the first surface.
In another embodiment, force distributing apparatus is provided for a bicycle wheel spoke, wherein the spoke is structured to be mounted to a hub flange of a bicycle wheel hub, and wherein the hub flange includes an opening with a flange-opening axis. The apparatus comprises a force-distributing body including a free-end first surface, a second surface disposed at an opposite side of the first surface, and a threaded spoke-receiving opening. The first surface of the force-distributing body is structured to engage the hub flange when the spoke is mounted to the hub flange, and at least one of the first surface or the second surface is shaped to allow the spoke to move in any lateral direction relative to the flange-opening axis.
Additional inventive features will become apparent from the description below, and such features alone or in combination with the above features and their equivalents may form the basis of further inventions as recited in the claims.
As shown in
Force-distributing body 58 has a convex free-end first surface 62, a concave second surface 66 disposed at an opposite side of first surface 62, and a centrally-disposed spoke-receiving opening 70 that extends through first surface 62 and second surface 66. A circular front edge 74 is formed at the junction of first surface 62 and spoke-receiving opening 70, and an annular, planar rear edge 78 is formed at the rear of force-distributing body 58. A cylindrical inner transition surface 82 is formed between front edge 74 and second surface 66, and a cylindrical outer transition surface 86 is formed between first surface 62 and rear edge 78. As a result of the foregoing structures, first surface 62 and second surface 66 each generally has the shape of a truncated sphere, such as generally the shape of a hemisphere, such as generally the shape of a frustum of a sphere, such as generally the shape of a frustum of a hemisphere, and optionally a true frustum of a hemisphere.
As shown in
When spoke 50 is mounted to hub flange 22a in the rest position shown in
Hub flanges 18a and 22a have the same structure as in the first embodiment. Thus, as shown in
While the above is a description of various embodiments of inventive features, further modifications may be employed without departing from the spirit and scope of the present invention. For example, while inner transition surface 82 in the first embodiment was smooth,
While spoke-receiving opening 114 in the second embodiment extended through both front edge 118 and rear edge 122 of force-distributing body 94 as shown in
While the spoke-receiving opening in each of the above embodiments was formed concentrically in the force-distributing member, additional benefits can be obtained by forming the spoke-receiving opening eccentrically in the force-distributing member. For example,
More specifically, as shown in
As shown in
The size, shape, location or orientation of the various components may be changed as desired. Components that are shown directly connected or contacting each other may have intermediate structures disposed between them. Separate components may be combined, and vice versa. The functions of one element may be performed by two, and vice versa. The function of one element may be performed by another, and functions may be interchanged among the elements. The structures and functions of one embodiment may be adopted in another embodiment. It is not necessary for all advantages to be present in a particular embodiment at the same time. Every feature which is unique from the prior art, alone or in combination with other features, also should be considered a separate description of further inventions by the applicant, including the structural and/or functional concepts embodied by such feature(s). Terms of degree such as “substantially,” “about” and “approximately” as used herein include a reasonable amount of deviation of the modified term such that the end result is not significantly changed. Thus, the scope of the invention should not be limited by the specific structures disclosed or the apparent initial focus or emphasis on a particular structure or feature.
Claims
1. A force distributing apparatus for a bicycle wheel spoke adapted to be mounted to a hub flange of a bicycle wheel hub, wherein the apparatus comprises:
- a force-distributing body having a free-end first surface and a second surface disposed at an opposite side of the first surface;
- wherein the first surface has the shape of a truncated sphere so that the first surface forms a ball joint with the hub flange of the bicycle wheel hub when the first surface engages the hub flange;
- wherein the force-distributing body has a spoke-receiving opening that extends through the first surface; and
- wherein the spoke-receiving opening is a threaded opening.
2. The apparatus according to claim 1 wherein the spoke-receiving opening is a blind opening.
3. The apparatus according to claim 1 wherein the force-distributing body has the shape of a truncated sphere.
4. The apparatus according to claim 3 wherein the first surface has the shape of a frustum of a sphere.
5. The apparatus according to claim 3 wherein the force-distributing body has the shape of a frustum of a sphere.
6. The apparatus according to claim 3 wherein the second surface has a concave shape.
7. The apparatus according to claim 6 wherein the second surface has the shape of a frustum of a sphere.
8. The apparatus according to claim 1 wherein the first surface is disposed on a first portion of the force-distributing body, wherein the second surface is disposed on a second portion of the force-distributing body, and wherein the spoke-receiving opening is disposed in the first portion to form a spoke-receiving axis.
9. The apparatus according to claim 8 wherein the first surface has the shape of a frustum of a sphere.
10. The apparatus according to claim 8 wherein the second surface is tapered relative to the spoke-receiving axis.
11. The apparatus according to claim 10 wherein the second surface has a conical shape.
12. The apparatus according to claim 11 wherein the second surface has the shape of a truncated cone.
13. The apparatus according to claim 12 wherein the second surface has the shape of a frustum of a cone.
14. The apparatus according to claim 13 wherein the spoke-receiving opening is a blind opening.
15. The apparatus according to claim 8 wherein the first surface has the shape of a frustum of a sphere, and wherein the second surface has the shape of a frustum of a cone.
16. A force distributing apparatus for a bicycle wheel spoke, wherein the spoke is structured to be mounted to a hub flange of a bicycle wheel hub, wherein the hub flange includes an opening with a flange-opening axis, and wherein the apparatus comprises:
- a force-distributing body including: a free-end first surface; a second surface disposed at an opposite side of the first surface; and a spoke-receiving opening; wherein the spoke-receiving opening is a threaded opening
- wherein the first surface is structured to engage the hub flange when the spoke is mounted to the hub flange; and
- wherein the entire surface of the force distributing body that contacts the hub flange is shaped to allow the spoke to move in any lateral direction relative to the flange-opening axis when the spoke is mounted to the hub flange.
17. The apparatus according to claim 16 wherein the first surface has the shape of a truncated sphere.
18. The apparatus according to claim 17 wherein the first surface has the shape of a frustum of a sphere.
19. The apparatus according to claim 17 wherein the force-distributing body has the shape of a frustum of a sphere.
20. The apparatus according to claim 17 wherein the second surface has a concave shape.
21. The apparatus according to claim 20 wherein the second surface has the shape of a frustum of a sphere.
22. The apparatus according to claim 16 wherein the first surface is disposed on a first portion of the force-distributing body, wherein the second surface is disposed on a second portion of the force-distributing body, and wherein the spoke-receiving opening extends into the first portion to form a spoke-receiving axis.
23. The apparatus according to claim 22 wherein the spoke-receiving opening extends through the first portion and into the second portion to form the spoke-receiving axis.
24. The apparatus according to claim 22 wherein the spoke-receiving opening is a blind opening.
25. The apparatus according to claim 22 wherein the second surface is tapered relative to the spoke-receiving axis.
26. The apparatus according to claim 25 wherein the second surface has a conical shape.
27. The apparatus according to claim 26 wherein the second surface has the shape of a truncated cone.
28. The apparatus according to claim 27 wherein the second surface has the shape of a frustum of a cone.
29. The apparatus according to claim 22 wherein the first surface has the shape of a frustum of a sphere, and wherein the second surface has the shape of a frustum of a cone.
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Type: Grant
Filed: Nov 28, 2016
Date of Patent: Mar 27, 2018
Patent Publication Number: 20170072740
Assignee: Shimano, Inc. (Sakai-ku, Osaka)
Inventors: Kazuki Koshiyama (Izumiotsu), Hiroshi Fujita (Matsubara)
Primary Examiner: S. Joseph Morano
Assistant Examiner: Jean Charleston
Application Number: 15/362,140
International Classification: B60B 1/04 (20060101); B60B 27/02 (20060101);